After drinking three cans of beer, akiva felt less guilty about the way he mistreated his wife and children. akiva's reduced guilt most likely resulted from the fact that his alcohol consumption has:

His alcohol consumption has reduced his self-awareness.
Alcohol works in such a way that it numbs your senses and emotions, so it is not surprising that Akiva didn't really care as much about how he treated his family after drinking some alcohol. His self-awareness is reduced, which means that his emotions become more and more numb.